I've had a discussion with my mum today, she's 79, and heard nothing, but everyone over 75 she knows has had at least 1 jab, they are being informed by letter, and all over the christmas mass post period, I've told my mum she needs to discuss with her doctor tomorrow, because she may have been sent a letter and just not received it, so tell your friend to phone immediately, as she just may not have got her/his letter.
Don't take no for an answer, lots haven't turned up for appointments, that may be because they never received their appointment.